Grease-cup



NICHOLAS wy. rnAUTNEn, or sfr. PAL niNivEsorA.

GREASE-cnr.

Specification of Letters Patent.

Patented May 24, 1921.

Application led September 27, 1920. Serial No. 412,975.

To all whom t may concern:

Be it known that I, NICHOLAS W. TRAUT- NER, a citizen of the United States, residing at St. Paul in the county of Ramsey and State of Minnesota, have invented a new and useful Grease-Cup, of which the following is a specification.

This invention relates to grease cups or the like, it being an object of the invention to provide means employed in connection with the movable element or plunger of the grease cup, to lock the plunger against accidental movement.

A further object ofthe invention is to provide a device of this character including a coiled spring and a laterally movable member adapted to be forced into engagement with the threads of the grease cup to restrict movement of the plunger by frictional contact with the threads of the grease Figure 1 illustrates a vertical sectional View of a grease cup constructed in accordance with the present invention.

Fig, 2 illustrates a sectional view taken on line 2-2 of Fig. 1.

Fig. 3 is a vertical section on line 3 3 of Fig. 1. i

Referring to the drawing in detail, the cup proper is indicated by the reference character 5, the cup being provided with the a threaded surface to move in the threads of the grease cup to set up a binding action between the threads Vof the movable `j aw and threads of the grease cup to restrict movement of the plunger with relation to the grease cup. As shown, the movable jaw 18 is provided with an extension 14 providing a stop for one end of the coiled spring 11, to connect the coiled spring and movable plunger, the coiled spring being provided to normally urge the movable jaw 13 outwardly into close engagement with thel threads of the cup proper. Thus it Awill be seen that the binding action which is set up between the movable j aw and inner threads of the cup, is sufficient to prevent rotary movement of the plunger accidentally, as by jarring the machine to which the grease cup is applied.

The upper compartment 9 of the plunger, is provided with angular walls indicated at 15 to accommodate a wrench, so that the plunger may be rotated within the cup proper to force grease from the cup.

Having thus described the invention, what is claimed as new is 1. In a device of the character described, a cup having internal threads, a plunger movable within the cup and having a lateral opening, a coiled spring disposed within the plunger, and means disposed within the opening and contacting with the coiled spring forI engaging the internal threads of the cup for restricting movement of the plunger.

2. In a device of the character described, a `cup section having internal screw threads, a plunger having a threaded periphery and operatin within the cup section, said plunger aving an opening formed in the Wall thereof, a movable jaw positioned as my own, Ik have hereto affixed my signa- Withnth)openng.aJ sgring contacting with ture in the presence of two Witnesses. the moya 1e jaw or oroingthe jaw into l engagement with the threads of the @up to NIC' W' TRAUTNER' 5 restrict movement of the plunger with re- Witnesses:

lation to the cup. VC'.VV.DIXo1\,

In testimony that I claim the foregoing-V OTTO F. DUTHERT. 

